S
M
T
W
T
F
S
29
35°
24°
30
33°
14°
1
25°
9°
2
27°
4°
3
24°
1°
4
21°
5°
5
20°
13°
6
24°
14°
7
25°
13°
8
26°
8°
9
25°
3°
10
22°
7°
11
22°
14°
12
26°
11°
13
29°
2°
14
21°
-2°
15
18°
-3°
16
13°
12°
17
28°
16°
18
31°
17°
19
32°
15°
20
35°
15°
21
31°
16°
22
34°
13°
23
33°
12°
24
27°
10°
25
25°
12°
26
28°
12°
27
29°
11°
28
29°
11°
29
24°
10°
30
26°
7°
31
26°
3°
1
19°
4°
2
16°
5°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Alberta
Alberta's December 2026 forecast shows daily high temperatures ranging from 13° to 35°, with overnight lows between -3° and 24°. The average high for December is 26° with an average low of 10°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how December weather will actually feel in Alberta. See also: January | February | March.
